Improvement in molds for butt-hinges



NITED STATES PATENT OEEIcEQ i B. F. HARLEY AND J. D. MORRIS, OFPHILADELPHIA, PENNSYLVANIA.

IMPROVEMENT IN MOLDS FOR BUTT-HINGES.

Speciiication forming part of Letters PatentvNo. 3,435, dated February12, 15441.

To all whom/it may concern.- Be it known that we, BENJAMIN F. HARLEY andJOHN D. MORRIS, ofthe city of Philadelphia, State of Pennsylvania, haveinvented a new and Improved Mode of Molding and Gasting Double-JointedFast-Joint Iron Butt- I-Iinges without the use of cores or chills, ofwhich we hereby declare the following toA be a full and exactdescription, reference being made to the annexed drawings, making a partof this specification. The nature of our invention consists in the useot'a pattern exhibited in the drawing hereto annexed, (marked A,) fromwhich is impressed immediately on thesand the drag or bottom part of themold of the halt-hinge. The back part of the moldl of the half-hinge isthen formed from the pattern exhibited in drawing annexed hereto,(marked B.) The half hinge is then cast in the usual Way from the moldformed as above. The drag or bottom part of the mold for the remaininghalf of the hinge is then formed from the pattern reprel sented bydrawing annexed, (marked C.) The half-hinge already cast from the moldfirst formed and mentioned (a hole for the wroughtiron wire having beeniirst drilled through it) is then inserted into the blank side of themold last made, in the usual mode. The mold for the back part of thislast part of the hinge is then made from the pattern represented indrawing D, and then is formed the complete mold for the remainingportion of the hinge.

What we claim for our invention, and desire' to secure by LettersPatent, is-

The above-described inode of molding the first above-describedhalf-hinge directly from the pattern, as exhibited by drawings A and l

